Midway through the second half Sunday, Oregon State looked poised to ruin No. 6 Cal's senior day, snap the Golden Bears' school-record win streak and destroy their chance for their first conference regular-season title.

But thanks to a 26-point effort by senior Layshia Clarendon, the Bears (25-2, 15-1 Pac-12) gutted out a 58-56 comeback victory to extend their win streak to 13 games and stay tied for first with Stanford.

"We're not scoring, they're scoring, and all of a sudden, we're looking at a 17-point deficit," Cal head coach Lindsay Gottlieb said. "This team dug in and said, 'This is not happening today.' "

From the opening tip, Oregon State (9-19, 3-12) looked determined to temper the Senior Day celebration for Clarendon, Talia Caldwell, Eliza Pierre and Tierra Rogers.

The deliberate OSU offense consistently used the whole shot clock. The Beavers also hit six three-pointers in the first half, including three by freshman Jamie Weisner. Oregon State held a 28-11 lead with four minutes left in the half and was ahead 30-18 at intermission.

But after halftime, Cal's Brittany Boyd, who missed Friday night's game with a groin injury, navigated the length of the floor and converted the type of tough transition basket the Bears couldn't seem to find in the first half.

With that, Cal's fast-paced attack was revived. Yet as Boyd helped Cal find its groove, Weisner remained firmly in hers. She scored seven points to counteract the Bears' half-opening run, and finished with a team-high 20 points.

Clarendon wasn't about to let a freshman ruin her day.

Said Clarendon: "I kept looking at (the team) and saying, 'This is about our character: What are we going to do? We can fold or we can respond.' ... When it comes down to it, how do you react?"

Clarendon answered that question herself. With Cal down seven, she rattled off nine of the Bears' next 14 points. During that streak, she grabbed sole possession of fifth on the program's all-time scoring list, snatched the momentum back from Weisner and tied the game.

Later, she set up Gennifer Brandon for a jumper that gave the Bears their first lead since the game's opening seconds at 50-49.

That lead was up to two by the time Oregon State's ShaKiana Edwards-Teasley missed a possible tying jumper in the final seconds.